Plate Tectonics

A ______ is a section of the lithosphere that slowly moves over the asthenosphere, carrying large slabs of continental and oceanic crust.

• wedge
• plate
• chunk
• fault

What is the name of the single landmass that began to break apart 200 million years ago?

• Panthalassa
• Laurasia
• Gondwanna
• Pangaea

The movement of fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another is _____________.

• Convection current
• Seismic waves
• Sea-floor spreading
• Conduction current

_____________ is a plate boundary where two plates move away from each other.

• Convergent boundary
• Transform boundary
• Divergent boundary
• Insurgent boundary

_____________ is when two plates move toward each other.

• Convergent boundary
• Allegiant boundary
• Transform boundary
• Sliding boundary

A _____________ is when two plates move past each other in opposite directions.

• emergent boundary
• divergent boundary
• transform boundary
• convergent boundary

___________ is the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.

• Seismic waves
• Convection current
• Divergent boundary
• Plate tectonics

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle

The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as _______

• convection.

• continental drift.

• subduction.

• conduction.

The San Andreas Fault in California is known as an active earthquake area. What type of

boundary is it?

• Converging

• Diverging

• Transform

• Sea Floor Spreading